/*
 * This file Copyright (c) 2015. Walle.
 * (http://www.wallellen.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the
 * Walle Agreement (WA) and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or WA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Walle Agreement (WA), this file
 * and the accompanying materials are made available under the
 * terms of the WA which accompanies this distribution, and
 * is available at http://www.wallellen.com/agreement.html
 *
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 */

package com.wallellen.core.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Properties;

/**
 * Created by walle on 12/9/15.
 */
public class PropertiesUtils {
    private String PROPERTY_FILE;
    private static final Logger log = LoggerFactory.getLogger(PropertiesUtils.class);

    public PropertiesUtils(String fileName) {
        this.PROPERTY_FILE = (PropertiesUtils.class.getResource("/").getPath().toString() + fileName);
    }

    public String getData(String key) {
        Properties props = new Properties();
        try {
            InputStream in = new BufferedInputStream(new FileInputStream(this.PROPERTY_FILE));

            props.load(in);
            in.close();
            return props.getProperty(key);
        } catch (Exception e) {
            log.error(e.getMessage());
        }
        return null;
    }

    public void setData(String key, String value) {
        Properties prop = new Properties();
        OutputStream fos = null;
        InputStream fis = null;
        try {
            File file = new File(this.PROPERTY_FILE);
            if (!file.exists())
                file.createNewFile();
            fis = new FileInputStream(file);
            prop.load(fis);
        } catch (IOException e) {
            System.err.println("Visit " + this.PROPERTY_FILE + " for updating " + value + " value error");
        } finally {
            try {
                fis.close();
            } catch (IOException e) {
            }
        }
        try {
            fos = new FileOutputStream(this.PROPERTY_FILE);
            prop.setProperty(key, value);
            prop.store(fos, "Update '" + key + "' value");
            prop.store(fos, "just for test");
        } catch (IOException e) {
            System.err.println("Visit " + this.PROPERTY_FILE + " for updating " + value + " value error");
        } finally {
            try {
                fos.close();
            } catch (IOException e) {
            }
        }
    }
}
